got crush map from osdmap epoch 2012
# begin crush map

# devices
device 0 osd.0
device 1 osd.1
device 2 osd.2
device 3 osd.3
device 4 osd.4
device 5 osd.5

# types
type 0 osd
type 1 host
type 2 rack
type 3 row
type 4 room
type 5 datacenter
type 6 pool

# buckets
host RADOS-0 {
        id -2           # do not change unnecessarily
        # weight 0.000
        alg straw
        hash 0  # rjenkins1
}
rack unknownrack {
        id -3           # do not change unnecessarily
        # weight 0.000
        alg straw
        hash 0  # rjenkins1
        item RADOS-0 weight 0.000
}
pool default {
        id -1           # do not change unnecessarily
        # weight 16.137
        alg straw
        hash 0  # rjenkins1
        item unknownrack weight 0.000
        item osd.0 weight 2.690
        item osd.1 weight 2.690
        item osd.2 weight 2.690
        item osd.3 weight 2.690
        item osd.4 weight 2.690
        item osd.5 weight 2.690
}

# rules
rule data {
        ruleset 0
        type replicated
        min_size 1
        max_size 10
        step take default
        step choose firstn 0 type osd
        step emit
}
rule metadata {
        ruleset 1
        type replicated
        min_size 1
        max_size 10
        step take default
        step choose firstn 0 type osd
        step emit
}
rule rbd {
        ruleset 2
        type replicated
        min_size 1
        max_size 10
        step take default
        step choose firstn 0 type osd
        step emit
}

# end crush map